This may be why this car gets sold!
Reply #3 –
You sure? Mine isn't all neatly wrapped, there's plugs that don't connect to anything, etc. Maybe it's just standard Ford for the time?
Anywhere you can, and still have a few inches of wire from both sides to work with. One side goes up the window frame to the dome (connect to relay terminal 30), the other comes from the door switch (to terminal 87a). Bring a 12v supply wire from anywhere to terminals 85 and 87, your grounding "control" wire to 86, and the door-open (for grounding type pin-switches) input wire to 87a, too.
See? It's easy. Really. Trust me. Oh, c'mon... trust meeeeeeeee! :D